On Tue, Mar 15, 2022 at 02:11:56AM +0000, Chris Packham wrote:
>
> On 15/03/22 13:24, Andrew Lunn wrote:
> >> diff --git a/arch/arm64/boot/dts/marvell/armada-98dx2530.dtsi b/arch/arm64/boot/dts/marvell/armada-98dx2530.dtsi
> >> new file mode 100644
> >> index 000000000000..ebe464b9ebd2
> >> --- /dev/null
> >> +++ b/arch/arm64/boot/dts/marvell/armada-98dx2530.dtsi
> >> @@ -0,0 +1,343 @@
> >> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> >> +/*
> >> + * Device Tree For AC5.
> >> + *
> >> + * Copyright (C) 2021 Marvell
> >> + *
> >> + */
> >> +
> >> +/dts-v1/;
> >> + memory@0 {
> >> + device_type = "memory";
> >> + reg = <0x2 0x00000000 0x0 0x40000000>;
> >> + // linux,usable-memory = <0x2 0x00000000 0x0 0x80000000>;
> >> + };
> > Is the memory part of the SoC, or is it on the board? Normally it is
> > on the board, so should be in the .dts file. But Apple M1 etc...
> I also wasn't sure about linux,usable-memory. It's commented out so it's
> obviously doing nothing but should it? No other in-tree dts files have it.
Hi Chris
I've no idea what it means. Maybe search the SDK and see if they have
some code and what it does. But i would drop it.
Andrew
